Skip to content

Montana Sapphire (Yogo) 0.119ct loose stone

Montana sapphires began when Dr. J.F. Kunz, a vice president of Tiffany & Co., proved that blue rough stones found in Yogo Valley, Montana, were sapphires. There are several deposits, but this one is from Yogo, which can be said to be the birthplace of Montana sapphires. Yogo mainly produces blue to violet sapphires. The mine is now closed, so it is a rare stone with no new production.

This is a Yogo sapphire that was purchased directly from the owner of the Montana sapphire mine in the United States. Yogo sapphires are particularly rare among Montana sapphires. It is a high-quality loose stone with high transparency.

Type: Loose (natural stone)
Stone name: Montana sapphire (from Yogo)
Weight: 0.119ct
・Size: 4.0 x 1.9 mm
・Shape: Baguette cut
・Scratches/chips: S
Inclusions: S
Note: Heating is in progress.
*Sapphires are generally gemstones that have been heated.
・Accessories: Caratz quality guarantee, loose case (if it does not fit, a clear zip case)

▷For more information about Yogo sapphires,
What is Yogo Sapphire? What are the differences with Montana Sapphires, their value, and how can they be identified?


▷We accept jewelry processing.If you would like to have your jewelry processed, please order along with the frame of your choice from the link below.
[Select by stone] Simple order
[Select by stone] Semi-custom
*If you would like an image of the stone in the frame, would like to discuss a full order, or have any other concerns or questions, please feel free to contact us here .
*Raw stones are not available. There are also some stones that cannot be handled.

*We try to make the colors in the photos as close as possible to the actual product, but they may look slightly different from the actual product depending on the lighting conditions at the time of shooting and the monitor environment you are using. Also, some photos may have been taken using a penlight.

*For information on scratches, chips, treatments, and inclusions, please click here .

*For other frequently asked questions, please click here .


karatz_item_id: 12552236